CVE-2021-32292

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-08-22. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2021-19147 (ENISA EUVD) · GHSA-gf2h-qrq9-jg6v (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.4%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in json-c from 20200420 (post 0.14 unreleased code) through 0.15-20200726. A stack-buffer-overflow exists in the auxiliary sample program json_parse which is located in the function parseit.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.4%
EPSS %ILE
71st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track* at medium mission impactTrack at low, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 22, 2023

Last Modified

October 14, 2026

Advisory Details (4)

Auto-updated Nov 8, 2026
Patch available.
Web pageMentions a patch (unverified)

SSA-398330

https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Web page

[SECURITY] [DSA 5486-1] json-c security update

https://www.debian.org/security/2023/dsa-5486
Web page

A stack-buffer-overflow in json_parse.c:89:44 · Issue #654 · json-c/json-c · GitHub

https://github.com/json-c/json-c/issues/654

Vendor Advisories for CVE-2021-32292(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibjson-c5 (0.15-3~ubuntu1.22.04.2) @ jammy2026-11-12ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
json-c0.15-2
  • every version up to 0.15-2+deb11u1: fixed in 0.15-2+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
json-c—
  • every version up to 0.16-1: fixed in 0.16-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
json-c—
  • every version up to 0.16-1: fixed in 0.16-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
json-c—
  • every version up to 0.16-1: fixed in 0.16-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 20× in last 7d / 88× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 319 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 219 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 11:24 UTCEchelonGraph re-scored
  2. 2026-11-13 11:24 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-11-12 16:29 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  4. 2026-11-12 11:57 UTCEchelonGraph re-scored
  5. 2026-11-12 11:57 UTCVendor advisory
  6. 2026-11-12 11:57 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-11-11 16:31 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  8. 2026-11-11 12:30 UTCEchelonGraph re-scored
  9. 2026-11-11 12:30 UTCVendor advisory
  10. 2026-11-11 12:30 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-10 16:35 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  12. 2026-11-10 13:03 UTCEchelonGraph re-scored
  13. 2026-11-10 13:03 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-11-09 16:29 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  15. 2026-11-09 13:35 UTCEchelonGraph re-scored
  16. 2026-11-09 13:35 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-11-08 16:33 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  18. 2026-11-08 14:09 UTCEchelonGraph re-scored
  19. 2026-11-08 14:09 UTCVendor advisory
  20. 2026-11-08 14:09 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-11-07 16:33 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  22. 2026-11-07 14:40 UTCEchelonGraph re-scored
  23. 2026-11-07 14:40 UTCVendor advisory
  24. 2026-11-07 14:40 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-11-06 16:30 UTCEPSS rescoreEPSS 1.4% · 71st percentile
Show 75 more
  1. 2026-11-06 15:14 UTCEchelonGraph re-scored
  2. 2026-11-06 15:14 UTCVendor advisory
  3. 2026-11-06 15:14 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-05 16:30 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  5. 2026-11-05 15:48 UTCEchelonGraph re-scored
  6. 2026-11-05 15:48 UTCVendor advisory
  7. 2026-11-05 15:48 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-04 16:29 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  9. 2026-11-04 16:21 UTCVendor advisory
  10. 2026-11-04 16:21 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-03 18:25 UTCOSV refresh
  12. 2026-11-03 16:54 UTCEchelonGraph re-scored
  13. 2026-11-03 16:54 UTCVendor advisory
  14. 2026-11-03 16:54 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-03 16:38 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  16. 2026-11-02 17:26 UTCEchelonGraph re-scored
  17. 2026-11-02 17:26 UTCVendor advisory
  18. 2026-11-02 17:26 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-11-02 16:37 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  20. 2026-11-01 17:59 UTCEchelonGraph re-scored
  21. 2026-11-01 17:59 UTCVendor advisory
  22. 2026-11-01 17:59 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-31 18:32 UTCEchelonGraph re-scored
  24. 2026-10-31 18:32 UTCVendor advisory
  25. 2026-10-31 18:32 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  26. 2026-10-31 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  27. 2026-10-30 19:00 UTCEchelonGraph re-scored
  28. 2026-10-30 19:00 UTCVendor advisory
  29. 2026-10-30 19:00 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  30. 2026-10-30 16:30 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  31. 2026-10-29 19:33 UTCEchelonGraph re-scored
  32. 2026-10-29 19:33 UTCVendor advisory
  33. 2026-10-29 19:33 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  34. 2026-10-29 16:29 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  35. 2026-10-28 20:07 UTCEchelonGraph re-scored
  36. 2026-10-28 20:07 UTCVendor advisory
  37. 2026-10-28 20:07 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-10-28 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  39. 2026-10-27 20:39 UTCEchelonGraph re-scored
  40. 2026-10-27 20:39 UTCVendor advisory
  41. 2026-10-27 20:39 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-10-27 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  43. 2026-10-26 21:13 UTCEchelonGraph re-scored
  44. 2026-10-26 21:12 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-10-26 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  46. 2026-10-25 19:39 UTCVendor advisory
  47. 2026-10-25 19:39 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  48. 2026-10-25 18:28 UTCEchelonGraph re-scored
  49. 2026-10-25 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  50. 2026-10-24 20:12 UTCEchelonGraph re-scored
  51. 2026-10-24 20:12 UTCVendor advisory
  52. 2026-10-24 20:12 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-10-24 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  54. 2026-10-23 20:46 UTCEchelonGraph re-scored
  55. 2026-10-23 20:46 UTCVendor advisory
  56. 2026-10-23 20:46 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  57. 2026-10-23 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  58. 2026-10-22 21:19 UTCEchelonGraph re-scored
  59. 2026-10-22 21:19 UTCVendor advisory
  60. 2026-10-22 21:19 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  61. 2026-10-22 16:29 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  62. 2026-10-21 21:53 UTCEchelonGraph re-scored
  63. 2026-10-21 21:53 UTCVendor advisory
  64. 2026-10-21 21:53 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  65. 2026-10-21 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  66. 2026-10-20 22:08 UTCEchelonGraph re-scored
  67. 2026-10-20 22:08 UTCVendor advisory
  68. 2026-10-20 22:08 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-10-20 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  70. 2026-10-19 22:39 UTCEchelonGraph re-scored
  71. 2026-10-19 22:39 UTCVendor advisory
  72. 2026-10-19 22:39 UTCGHSA enrichmentGHSA-gf2h-qrq9-jg6v · GitHub severity CRITICAL · GitHub CVSS 9.8
  73. 2026-10-19 16:28 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  74. 2026-10-18 21:23 UTCEchelonGraph re-scored
  75. 2026-10-18 21:23 UTCVendor advisory

Frequently asked(5)

What is CVE-2021-32292?
CVE-2021-32292 is a critical-severity vulnerability; its CVE record was published on August 22, 2023. An issue was discovered in json-c from 20200420 (post 0.14 unreleased code) through 0.15-20200726. A stack-buffer-overflow exists in the auxiliary sample program json_parse which is located in the function parseit.
When was the CVE record for CVE-2021-32292 published?
The CVE record for CVE-2021-32292 was published on August 22, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2021-32292 actively exploited?
CVE-2021-32292 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.4% probability of exploitation in the next 30 days (71st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-32292?
CVE-2021-32292 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-32292?
A fix for CVE-2021-32292 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2021-32292 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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